Wall or ceiling fixture for lights.



D. OROWNFIBLD.

WALL 0R CEILING FIXTURE FOR LIGHTS.

APPLICATION FILED MAR. e, 1914.

1, 1 1 2, 1 97, Patented Sept. 29, 1914.

Y w l TED sTATEsPAT N OFF-ICE 7 DAVID CROWNFIELD, OF CAMBRIDGE, MASSACHUSETTS.

. WALL on CEILING FIXTURE iron LIGHTS.

Application filed March 6,

Fl) all whom it may concern Be it known that I, DAVID CnowNrInLn, a citizen of the United States, and resident of lan'ibridge, in the county of Middlesex and State of filassachusctts, have invented new and. useful Improvements in Wall or Ceilinn- Fixtures for Lights, oi which the following is a specification.

lily invention relates to fixtures for lights, and HS object is to provide a fixture adapted for secureinent to a wall or ceiling or other part of a building and which shall be free from dust-colle iing surfaces and angles so that the fixture may be peculiarly suited to hospitals. I

The construction of my light fixture has for its chief characteristic freedom fromany dust-collecting surfaces, and secondarily, simplicity of construction and ease of attachment and adjustment.

in the drawings hereto annexed which illustrate an example of my invention, Figure 1 is a vertical sectionof the light fixture secured to a ceiling; Fig. 2 is a top plan view of a. shade adapted to be attached to and form. part of the fixture; Fig. 3 is a vertical section on an enlarged scale of parts. of the hanger and shade holder, and the attachment tor securing a lamp socket Fig. 4- is a view in perspective of the shade holder; and Fig. 5 is a view in perspective oi the top part of the shade.

in Fig. l the light fixture is shown as afiixed to a ceiling and depending therefrom. it may, however, be allixed to such part of a building that it will not hang vertically. The nipple 2 forming part of a conduit for the introduction of the lighting medium to the lamp is secured to and depends a short distance from the ceiling 1. The leader pipe 3 is secured into the nipple 2 and is screw-threaded at its lower end for the attachment of the threaded sleeve 4:. This sleeve is stepped and threaded on each of its portions 5, G and. 7, these portions be ing of successively diminished diameters.

'ihc hanger 8 is secured to the building through the medium oi? the leader pipe 3 by being screwed. upon the thread at 5, so that the hanger constitutes a sleeve surrounding the leader pipe 3. Near the upper end of ihc hanger 8 there is secured or otherwise formed an. enlargement i), this enlargement being internally screw-tln'eadcd toreceive and er with the screw thread on the not per .5. ll. of the canopy 1.0. This Specification of Letters Patent. i Patented Sept. 29, 19-14;.

1914. SerialNo. 822,817;

canopy is shaped so as to embrace the hanger closely at one end, and to flare toward the ceiling or other portion of the building from which the hanger is suspended and is adjustably secured, by means of the screw threaded connection between the parts 9 and 11. It will be observed that this connection is wholly interior to the canopy 10 so that the smooth exterior sur face of the canopy is unbroken by the protrusion of any fastening means.

At the lower end of the hanger 8 there is secured the shade holder 12 which has a nut member 13 secured to it at or near its upper end, this nut member 13 being adapted to make threaded engagement with the threaded portion 6 on the sleeve 4. The shade holder 12 flares outwardly and downwardly, its upper end being of substantially the same diameter as the hanger 8, so that when the upper end of the shade holder 12 is abutted against the lower end of the hanger 8, the outer surfaces of these two members shall be substantially continuous and without any ledge, seam or other break in the surface. The reduced diameter of the threaded portion 6 of the sleeve 1 allows the shade holder 12 and hanger 8 to abutJvit-h substantial continuity of surface, without any ledge or projection. I

A lamp socket 14 is secured by ascrewthreaded connection through the smallest threaded portion 7 ofthe sleeve i, the socket and the threaded portion being entirel 1 housed inside the shade holder 12. The means for securing the shade 17 to the bellshaped holder 12 are interior to the said shade holder and consists in the example shown of the inturned spurs 16 which are so spaced around the periphery of the bell -Which is preferably integral with the body 17 of the shade, is connected to the main body of the shade by webs 20, each of which is iutern'iediate between adjacent notches 19.

To attach the lamp fixture, the leader pipe 3 is secured into the nipple 2, with the hanger 8 screwed to the sleeve 4, and the sleeve 4 screwed to the lower end of the leader pipe 3. The canopy 10 is then slipped over the hanger 8 and slid along until the nut member 11 can be engaged with the cor responding thread of the enlargement 9 and then the canopy 10 is adjusted toward the ceiling 1 until it comes into close contact therewith The lower and'sniuller end of the canopy 10 should fit closely around. the hanger 8. The shade holder 12 is then socured to the sleeve lby screwing its not portion 13 over the threaded portion 6 of the sleeve d. The lamp socket 14 meyihen be screwed over the threaded part 7 of the sleeve land the shade 17 then attached to the shade holder 1 by passing the flange 18 into the mouth of the shade holder so that the notches 19 will pass over the spurs 16 of the shade holder. The shade 1'? is then giv'enn slight turn so that the spurs 16 will engage With the under side of the flange 18 onthe shade. The means of securing the shade to the shade holder are wholly interior to the shade holder, and all of the fastening devices involved in the construction of the above described light fixture are interior to and concealed by the members which constitute the outer shelh namely, the canopy l0, hanger 8 and shade holder 12. The external surfaces-oi these members are smooth and unhrokmsnd formno dustcollecting ledges, so hilfiii'} a minimum of dust can collect upon the fix'tuie and the fixture as a whole is very easily wiped clean whenever desired.

I claim:

1. In a light fixture, the combination of a tubular hanger, means to secure the hunger to port of e building, a canopy surrounding the hanger, adjustable means wholly interior to the canopy, securingthe some to the henger, a, shade holder secured to the free end of the hanger, means Wholly interior to the shade holder to secure a'shede thereto, and means to attach a light to the hanger on the inside of the shade holder.

2. In a light fixture, the combination of a tubular hanger, means to secure the hanger to part of a, building, a hollow outwardly flaring canopy surrounding: the hanger, the hanger and ca-nopy'in screw thread connec tion inside the canopy, a shade holder secured to the free end of the hanger, means wholly interior to the shade holder to secure :1 shade thereto, said shade holder overhang-- ing said shade fastening means, and means to attach a light on the inside of the shade holder.

3. In. a light fixture. the combination of a tubular hanger, means to secure the hanger to part of a building, an enlargement near one end of the hanger, a hollow outwardly flaring canopy embracing the honger at its smaller end and provided with internal means to engage the enlargement on the lumger edjustably, u Sleeve secured to the free end of the hanger internally oi the some, said sleeve provided with u section of smaller diameter than that secured to the hanger, s Sllndc holder secured internally to said smaller sleeve sect-ion,

interior to tie shade holder to secure it shade thereto, said shade holder overhanging" said shade fastening means. and means lo :uuich I a light to the sleeve on the inside of mid shade holder.

4. In a light fixture, the combination of n. tubular hanger having on enlnrgm'ncut. rue-ens to secure said hanger to pum' of :1 building. a canopy having an opening: for said hanger and :1 screw threaded lulliIlOl'l adapted to coiperstc with said cnlnr; -.-.uneut adjustahly to secure said hanger :md said canopy, threaded sleeve on said lci'rujcr. a shade holder secured to said sleeve and shutt-ingz against said hunger whereby the outer surface of said holder and hunger ,r'c sullstantizilly continuous. means wholly interior to the shade holder to secure a slmdcllmrto, and means to attach s light on the inside of said shade holder.

5. In a light fixture, the coinbiuntil'm of a tubular hsugexymesns to secure the hunger to port of a. building, a hollow canopy sun rounding the hanger, adjustable mums wholly interior to the canopy securing the same to the hanger, a sleeve secured on the free end of said hanger internally ol' the some, said sleeve provided with a section of smaller diameter than that secured to the hunger, a. shade, holder having an interior screw threaded portion secured to said smaller sleeve section and provided with internal spurs spaced apart for securing 1i shade, and'nieons to attach a light on the inside of said shade holder.

6. In a ight fixture, the combination of e tubular hiinger, means to secure the hunger to part of a building, it hollow canopy surroundingthe hanger, adjustable means Wholly interior to the canopy securing the some to the hanger, a sleeve secured on the free end of said hunger interrmlly of the sonic, said sleeve provided with a St on of smaller diameter than that secured to the hanger, a shade holder having on interior screw threaded portion secured to said smaller sleeve section and provided upon the periphery of its mouth with inturncd spurs spaced apart. :1 shade having a flange pro-- vided with notches adapted to cooperate With said spurs to secure shade to said shade holder, and means to attach a light on the inside of said shade holder.

7. In a light fixture, the combination oi a tubular hanger having" an cnlerucment, means to secure said hunger to part of a building, a hollow outwardly luring canopy embracing the hunger and having :1 screw threaded portion adapted to cooperate with said enlargement :uljustnbl v to secure said hanger and said coir my. u thread d cove secured to the free end of the hunger internnlly oi the some. said sleeve providwl with a section of smaller diameter than that means whollv r curen to the hanger, a shade holder lnlvin v Q PD an interior screw threaded portion secured to said smaller sleeve section and abutting against said hanger whereby the outer surface of said holder and hanger are substantially continuous, means Wholly interior to the shade holder to secure a shade thereto, said shade holder overhanging said shade fastening means, and means to attach a light to said sleeve on the inside of said shade holder. i

8. In a light fixture, the combination of a tubular hanger having an enlargement, means to secure said hanger to part of a building, a hollow outwardly flaring canopy embracing the hanger and having a screw threaded portion adapted to cooperate with said enlargement adjustably to secure said hanger and said canopy, av threaded sleeve secured to the free, end of the hanger in substantially continuous, a shade ternally of the same, said sleeve provided with a section of smaller diameter than that secured to the hanger, a shade holder having an interior screw threaded portion secured, to said smaller sleeve section and abutting against said hanger whereby the outer surface of said holder and hanger are having a flange provided with notches adapted to cooperate with in'turned spurs on said shade holder to secure said shade to said holder, and means to attach a light to said-sleeve on the inside of said shade holdeiu Signed by me at Boston, Massachusetts, this 27th day of February, 1914.

DAVID CROWNFIELD. Witnesse's':'- v Bonner Cowman,- G. WRIGHT ARNOLD. 

